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C/eaning the Inside of Your Vehicle 
Use a vacuum cleaner often to get  rid of dust  and loose dirt. Wipe vinyl or 
leather  with a clean,  damp  cloth. 
Your 
GM dealer  has two CM cleaners,  a solvent-type  spot lifter and  a 
foam-type  powdered  cleaner. They  will clean normal spots and stains  very 
well.  Do 
not use them  on vinyl  or leather. 
Here  are  some  cleaning tips: 
Always read the instructions  on  the cleaner  label. 
Clean up stains as soon as you  can - before  they set. 
0 Use a clean  cloth or  sponge,  and change  to a clean area often. A soft 
brush  may  be  used 
if stains are  stubborn. 
0 Use solvent-type  cleaners in a well-ventilated  area only. If you use 
them,  don‘t  saturate  the  stained area. 
0 If a ring  forms after  spot  cleaning, clean the entire  area immediately  or 
it will set. 
Using  Foam-Type  Cleaner  on  Fabric 
Vacuum  and  brush the area to remove  any loose dirt. 
Always clean 
a whole  trim panel or section.  Mask surrounding trim 
along  stitch or welt lines. 
Mix Multi-Purpose  Powdered  Cleaner  following the directions on the 
container  label. 
Use  suds 
only and apply with a clean  sponge. 
Don’t saturate  the material. 
Don’t 
rub it roughly. 
As  soon as you’ve  cleaned the section,  use a  sponge  to  remove  the 
suds. 
Rinse the 
section with  a  clean, wet sponge. 
Wipe 
off what’s left with a slightly  damp paper  towel or  cloth. 
Then  dry 
it immediately with a blow dryer  or a heat lamp. 
NOTICE: 
Be  careful. A blow  dryer may scorch  the  fabric. 
~~  ~ 
0 Wipe  with a clean  cloth. 
6-68 
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Scheduled Maintenance Services 
KEEP ENGINE OIL 
AT THE  PROPER 
LEVEL AND  CHANGE 
AS  RECOMMENDED 
Section 
This  section  covers the maintenance  required for your vehicle.  Your vehicle 
needs these  services to retain its safety, dependability  and emission  control 
performance. 
I protection 
Plan 
I 
Introduction 
Your Vehicle  and  the  Environment 
Proper  vehicle  maintenance  not only helps to keep  your  vehicle in good 
working  condition,  but also helps the environment.  All recommended 
maintenance  procedures  are important.  Improper vehicle  maintenance  or the 
removal 
of important  components  can  significantly  affect the quality  of  the 
air  we  breathe.  Improper 
fluid levels or even  the wrong tire  inflation can 
increase the  level of emissions  from  your  vehicle. 
To help protect our 
environment,  and 
to help keep  your vehicle  in good condition,  please 
maintain  your vehicle properly. 
7-1 
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        Page 360 of 488

If your engine has more  than one  emissions  classification, the classification 
is determined by the Gross  Vehicle  Weight  Rating  (GVWR) of your  vehicle 
as shown  on  the Certification  Label.  See “Loading  Your  Vehicle” 
in the 
Index. 
Once  you’ve determined your  engine type and, 
if necessary, emissions 
classification,  you’ll need to  decide which  of  the  two schedules  is  right  for 
your vehicle.  See Definitions  for Maintenance  Schedule 
I and Maintenance 
Schedule 
I1 following. 
Schedule  I Definition - Gasoline  Engines  With  Light  Duty 
Emissions 
Follow Maintenance  Schedule I if any  one of these  is true for your vehicle: 
iII Most  trips are  less than 5 to 10 miles (8 to 16 km). This  is particularly 
important  when outside temperatures  are  below freezing. 
0 Most trips include  extensive idling (such as frequent driving in 
stop-and-go  traffic). 
You operate your vehicle in dusty  areas  or off-road  frequently. 
0 You frequently  tow a trailer. 
Schedule 
I should also be  followed if the  vehicle  is  used  for  delivery 
service,  police, taxi, or other commercial  application. 
Schedule I Intervals - Gasoline  Engines  With  Light  Duty 
Emissions 
Every 
3,000 Miles (5 000 km) or 3 Months,  Whichever Occurs First 
Engine Oil and Filter  Change 
Chassis  Lubrication 
Drive Axle Service 
At 6,000 Miles (10 000 km) - Then  Every 12,000 Miles (25 000 km) 
Tire  Rotation 
Every 75,000 Miles (25 000 km) 
Air Cleaner Filter Inspection, if driving in dusty  conditions 
Front Wheel Bearing Repack 
(or at each brake  relining)  (2WD  Only) 
7-4 
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Every 30,000 Miles (50 000 km) 
Air Cleaner  Filter  Replacement 
Spark  Plug Replacement 
Fuel  Filter  Replacement 
Clutch 
Fork Ball  Stud  Lubrication  (5-Speed Manual Transmission  With 
Deep-Low  Only) 
Cooling  System  Service  (or every 
24 months, whichever  occurs  first) 
Every 50,000 Miles (83 000 km) 
Automatic  Transmission  Service  (severe  conditions only) 
Every 60,000 Miles (100 000 km) 
Engine Accessory  Drive Belt Inspection 
Spark Plug Wire Inspection 
Engine  Timing  Check 
Fuel Tank,  Cap and Lines Inspection 
Schedule 11 Definition - Gasoline  Engines  With  Light Duty 
Emissions 
Follow  Schedule I1 only if none of the conditions  from  Schedule I is true. 
Schedule  I1 Intervals - Gasoline Engines  With Light  Duty 
Emissions 
Every 
7,500 Miles (12 500 km) 
Engine  Oil and  Filter  Change  (or  every 12 months, whichever  occurs  first) 
Chassis  Lubrication  (or every 
12 months, whichever  occurs  first) 
Drive  Axle Service 
At 7,500 Miles (12 500 km) - Then  Every 15,000 Miles (25 000 km) 
Tire Rotation 
7-5 
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Schedule I Intervals - Gasoline Engines  with  Heavy  Duty 
Emissions 
Every 
3,000 Miles  (5 000 km) 
Engine Oil  and Filter  Change  (or every 3 months, whichever  occurs  first) 
Chassis  Lubrication  (or every 
3 months,  whichever  occurs  first) 
Drive Axle  Service 
At 6,000 Miles (10 000 km) - Then  Every 12,000 Miles (25 000 km) 
Tire Rotation 
Every 12,000 Miles (20 000 km) 
Air Cleaner  Filter Inspection, if Driving in Dusty  Conditions 
Front Wheel  Bearing Repack  (or  at Each Brake Relining)  (2-Wheel Drive 
Only 
1 
Fuel Filter  Replacement 
Engine Accessory  Drive  Belt Inspection 
Shields 
and Underhood  Insulation  Inspection 
Thermostatically  Controlled  Engine Cooling  Fan Check  (or every 
12 
months, whichever  occurs  first) 
Every 24,000 Miles  (40 000 km) 
Cooling  System  Service  (or  every 24 months, whichever  occurs  first) 
Air  Cleaner  Filter Replacement 
Engine  Timing  Check 
Thermostatically  Controlled  Air Cleaner Inspection 
Air Intake  System Inspection 
Every 27,000 Miles (45 000 km) 
Spark Plugs Replacement 
Every 30,000 Miles  (50 000 km) 
Clutch Fork  Ball Stud Lubrication  (%Speed  Transmission with Deep-Low 
Only) 
7-7 
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        Page 364 of 488

Every 50,000 Miles (83 000 km) 
Automatic Transinission Service 
Every 60,000 Miles (100 000 km) 
Spark Plug Wire  Inspection 
Exhaust  Gas Recirculation  (EGR) System Inspection 
Fuel  Tank,  Cap and Lines Inspection 
Evaporative Control System Inspection 
Electronic  Vacuum Regulator  Valve 
(EVRV j Inspection 
Schedule  I1 Definition - Gasoline Engines  With  Heavy  Duty 
Emissions 
Follow Schedule TI only if none of the  conditions  from Schedule I is true. 
Schedule  I1 Intervals - Gasoline  Engines with-Heavy  Duty 
Emissions 
Every 
6,000 Miles (10 000 km) 
Engine Oil and Filter Change (or every 3 months.  whichever occurs  first) 
Clussis Lubrication (or every 3 months,  whichever occurs first) 
Drivc Axle  Scrvice 
At 6,000 Miles (10 000 km) - Then  Every 12,000 Miles (20 000 km) 
Tire Rotation 
Every 12,000 Miles (20 000 km) 
1 
Engine Accessory  Drive  Belt Inspection 
Shields  and Underhood  Insulation Inspection 
Thermostatically  Controlled Engine Cooling 
Fan Check (or every 12 
months, whichever  occurs  first) 
7-8 
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        Page 366 of 488

I Schedule  I  Intervals - Diesel  Engines I 
Every 2,500 Miles (4 000 km) 
Engine Oil  and Filter  Change  (or every 3 months, whichever occurs  first) 
Chassis  Lubrication  (or every 
3 months, whichever  occurs  first) 
Air  Cleaner  Filter Inspection. 
if Driving in Extremely Dusty or Dirty 
(Off-Road)  Conditions 
Every 5,000 Miles (8 000 km) 
Drive Axle Service 
Every 7,500 Miles (12 000 km) 
Air Cleaner Filter Inspection, if Driving in Dusty Conditions 
At 7,500 Miles (12 000 km) - Then  Every 15,000 Miles  (24 000 km) 
Tire Rotation 
Every 10,000 Miles (I 6 000 km) 
Shields  and Underhood Insulation Inspection 
Thermostatically  Controlled Engine Cooling  Fan Check  (or every 
12 
months,  whichever  occurs  first) 
Air Intake System Inspection 
Every 15,000 Miles  (24 000 km) 
Air Cleaner  Filter Replacement 
Front Wheel Bearing Repack 
(or at  Each  Brake Relining)  (2-Wheel  Drive 
Only j 
Every 30,000 Miles (50 000 km) 
Clutch Fork Ball Stud Lubrication  (%Speed  Transmission  with  Deep-Low 
Only:) 
Fuel Filter  Replacement 
Cooling 
System Service (or every 24 months, whichever  occurs  first) 
Every 50,000 Miles (80 000 km) 
Automatic Transmission Service 
7- 10 
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        Page 367 of 488

Every 60,000 Miles (100 000 km) 
Crankcase Depression  Regulator Valve (CDRV)  System  Check 
Engine  Accessory  Drive Belt Inspection 
Fuel Tank,  Cap and Lines  Inspection 
Evaporative  Control System Inspection 
Exhaust  Gas Recirculation  (EGR) System  Inspection 
(if equipped) 
Exhaust  Pressure  Regulator Valve Inspection 
I Schedule 11 Definition - Diesel Engines 
Follow  Schedule II on!\- if none ofrhe conditions i'wm Schcdtilc I Is truc. 
-- 
I Schedule  I1 lntervals - Diesel  Engines 1 
Every 5,000 Miles (8 000 km) 
Engine Oil and Filter  Change (or every 12 months, whichever  occurs  first) 
Chassis  Lubrication 
(or every 12 months,  whichever  occurs  first) 
Drive  Axle Service 
At 5,000 Miles (8 000 km) - Then  Every 10,000 Miles (16 000 km) 
Tire Rotation 
Every 10,000 Miles (16 000 km) 
Shields  and Underhood  insulation  Inspection 
Air Intake  System Inspection 
Thermostatically  Controlled Engine  Cooling  Fan Check  (or every 
I2 
months,  whichever  occurs  first) 
Every 30,000 Miles (48 000 km) 
Cooling  System  Service  (or every 24 months,  whichever  occurs  first) 
Front Wheel  Bearing Repack  (or 
at Each Brake  Relining)  (2-Wheel  Drive 
Fuel  Filter  Replacement 
Air  Cleaner  Filter Replacement 
Clutch Fork  Ball  Stud Lubrication  (5-Speed Transmission  with  Deep-Low 
Only) 
Only) 
7-11 
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